Objective To investigate the current status of physical activity and depressive symptoms among middle-aged and older adults in Chengdu,Sichuan and explore the relationship between physical activity and depressive symptoms. Methods Multi-stage proportional stratified random sampling was employed to select middle-aged and older adults aged ≥45 years as the participants,and face-to-face interviews were carried out to collect data.Logistic regression was adopted to explore the relationship between physical activity and depressive symptoms in middle-aged and older adults.The trend test was performed for the relationship between different levels of physical activity and depressive symptoms.The subgroup analysis and the test for multiplicative interactions were conducted for the relationship between physical activity and depressive symptoms. Results A total of 4376 middle-aged and older adults were included.Among them,14.58% (638/4376),25.98% (1137/4376),and 27.83% (1218/4376) had depressive symptoms,failed to reach the guideline-recommended standards of physical activity,and were at low levels of physical activity,respectively.There was a negative association between reaching guideline-recommended physical activity standard and depressive symptoms in middle-aged and older adults (OR=0.713,95%CI=0.589-0.861,P<0.001).In addition,moderate levels (OR=0.714,95%CI=0.586-0.871,P=0.001) and high levels of physical activity (OR=0.705,95%CI=0.548-0.906,P=0.006) had negative associations with the presence of depressive symptoms.The trend test revealed that the negative association between physical activity and depressive symptoms in middle-aged and older adults enhanced as the level of physical activity increased (Pfor trend=0.001).The subgroup analysis and the test for multiplicative interactions revealed that neither reaching guideline-recommended physical activity standards or not nor the physical activity level had an interaction with each of the subgroups (all Pfor interaction>0.05). Conclusion The current status of depressive symptoms among middle-aged and older adults in Chengdu,Sichuan needs to be ameliorated.A negative association existed between reaching the guideline-recommended physical activity standard and presence of depressive symptoms,and the negative association enhanced as the physical activity level elevated.
目的 了解四川省成都市中老年人体力活动和抑郁症状的现状,并探讨体力活动与抑郁症状间的关系。方法 采用多阶段按比例分层随机抽样,选取四川省成都市某中心城区45岁及以上中老年人作为研究对象,采用面对面访谈的方式收集数据。采用Logistic回归模型探究中老年人体力活动与抑郁症状的关系,并进一步进行不同体力活动水平与抑郁症状关系的趋势性检验以及体力活动与抑郁症状关系的亚组分析与相乘交互作用检验。结果 共纳入4376名中老年人,抑郁症状检出率为14.58%(638/4376),未达到指南推荐体力活动标准的占25.98%(1137/4376),体力活动水平处于低水平的占27.83%(1218/4376)。中老年人达到指南推荐体力活动标准与抑郁症状之间存在显著负相关(OR=0.713,95%CI=0.589~0.861,P<0.001);此外,相比于低水平体力活动的中老年人,中等水平体力活动(OR=0.714,95%CI=0.586~0.871,P=0.001)、高水平体力活动(OR=0.705,95%CI=0.548~0.906,P=0.006)与检出抑郁症状之间均存在显著负相关。进一步进行趋势性检验显示,中老年人体力活动水平与存在抑郁症状之间的负相关随着体力活动水平的依次递增而增加(P趋势=0.001)。进行亚组分析与交互作用检验显示,是否达到指南推荐体力活动标准、不同的体力活动水平与各亚组间均不存在交互效应(P交互均>0.05)。结论 四川省成都市中老年人抑郁症状现况有待改善,达到指南推荐体力活动标准与抑郁症状间存在显著负相关,且中老年人体力活动水平与抑郁症状间的负相关随体力活动水平的依次递增而增加。.
Keywords: depressive symptom; middle-aged and older adults; physical activity.